Management of ketosis-prone type 2 diabetes mellitus.

Diabetic ketoacidosis (DKA) has largely been considered unique to type 1 diabetes because of the absolute lack of insulin production secondary to beta-cell dysfunction. However, a relatively new diabetes subtype known as ketosis-prone type 2 diabetes mellitus (DM) may also elicit diabetic ketoacidosis. Ketosis-prone type 2 DM shares a similar pathophysiology as type 2 DM, but presents initially with signs and symptoms consistent with type 1 DM. Patients with ketosis-prone type 2 DM often present with elevated glucose levels of 500-700 mg/dl, elevated ketone levels, and elevations in hemoglobin A1C. Unlike DKA seen in type 1 DM, they do not exhibit autoantibodies to beta cells. The similarity with type 1 DM exists in their impaired insulin secretion, which, when combined with extreme insulin resistance, will lead to ketoacidosis. Despite the initial clinical presentation that resembles type 1 DM, patients may not require lifelong insulin and achieve appropriate glycemic control with oral agents. Nurse practitioners must recognize the clinical picture of ketosis-prone type 2 DM and use a multifaceted approach, encouraging dietary changes, increased physical activity, and medication adherence to build the self-management skills of the patient and ultimately decrease the long-term disease burden.